package com.vcg.community.common.utils;

import java.net.Inet4Address;
import java.net.UnknownHostException;

import javax.servlet.http.HttpServletRequest;

public class IpUtils {
	
	//获取本机IP
	public static String localHost = getLocalHost();
	
    private IpUtils() {
    }

    public static String getIpAddr(HttpServletRequest request) {
        if (request == null) {
            return "unknown";
        }
        String ip = request.getHeader("x-forwarded-for");
        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
            ip = request.getHeader("Proxy-Client-IP");
        }
        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
            ip = request.getHeader("X-Forwarded-For");
        }
        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
            ip = request.getHeader("WL-Proxy-Client-IP");
        }
        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
            ip = request.getHeader("X-Real-IP");
        }

        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
            ip = request.getRemoteAddr();
        }
        return ip;
    }
    
    public static String getLocalHost(){
    	try {
			String hostAddress = Inet4Address.getLocalHost().getHostAddress();
			return hostAddress;
		} catch (UnknownHostException e) {
			e.printStackTrace();
		}
		return "localhost";
    }
}
